idnr: 513

4
		2
	2
			1

Difficulty: Very easy (0)

idnr: 153


		3	2
1	3

Difficulty: Super easy (0)

idnr: 388

		4
	3
		1
	4

Difficulty: Super easy (0)

idnr: 53


1	4
		2	3

Difficulty: Super easy (0)